Probability Bias

1. A sample in which every person, object, or event has an equal chance of being selected.

• A. Random sample.
• B. Biased sample.

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

3. A public library asked every 10th person who entered to name the type of book they were getting.

• A. Biased
• B. Unbiased

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

4.  Carlos wants to know the favorite sport of people at his school so he asks his baseball team.

• A. Biased
• B. Unbiased

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

5.  A hospital wants to open a gym. They ask the night-shift ER staff when they would use the gym.

• Biased
• Unbiased

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

7. The choir director in a high school wants to know how the students in the school feel about singing. If the director selects 100 girls and 100 boys to complete a survey, which method will result in a biased sample?

• A. The students will be selected from the choir.
• B. The students will be selected randomly throughout the school.

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

10. A teacher decides to survey the students in her classes to find out their opinion on the new menu in the cafeteria.  Is this biased or unbiased?

• Biased
• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

11. Larger random sample sizes are more representative of a population.

• A. True
• B. False

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

12. Which random sample is the more likely it is to represent the population of a Jupiter Middle School  accurately?

• A. Five students of a school.
• B. Five hundred students of a school.

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

14. Biased questions lead people to answer a particular way.

• A. True
• B. False

Tags

CCSS.RL.11-12.6

15. Is the following question biased? 
Are stoplights needed at the intersection of Main and Perry Streets?

• A. Not biased/ Unbiased
• B. Biased

Tags

CCSS.RL.11-12.6